Structural correlations for 1 H, 13 C and 15 N NMR coordination shifts in Au(III), Pd(II) and Pt(II) chloride complexes with lutidines and collidine

1 H, 13 C and 15 N NMR studies of gold(III), palladium(II) and platinum(II) chloride complexes with dimethylpyridines (lutidines: 2,3‐lutidine, 2,3lut; 2,4‐lutidine, 2,4lut; 3,5‐lutidine, 3,5lut; 2,6‐lutidine, 2,6lut) and 2,4,6‐trimethylpyridine (2,4,6‐collidine, 2,4,6col) having general formulae [AuLCl 3 ], trans ‐[PdL 2 Cl 2 ] and trans ‐/ cis‐ [PtL 2 Cl 2 ] were performed and the respective chemical shifts (δ 1H , δ 13C , δ 15N ) reported. The deshielding of protons and carbons, as well as the shielding of nitrogens was observed. The 1 H, 13 C and 15 N NMR coordination shifts (Δ 1H coord , Δ 13C coord , Δ 15N coord ; Δ coord = δ complex − δ ligand ) were discussed in relation to some structural features of the title complexes, such as the type of the central atom [Au(III), Pd(II), Pt(II)], geometry ( trans ‐ or cis ‐), metal‐nitrogen bond lengths and the position of both methyl groups in the pyridine ring system. Copyright © 2010 John Wiley & Sons, Ltd.